my husband, david, has stage 4 non-small cell adinocarcinoma. his dr recommended experimental treatment. david hasnt had treatment for 4 months. he was incarcerated for 12 years and has been home for 1 week today. his former dr said that chemo wasnt hurting his good cells so he stopped treatment. he is taking pain meds and metphormine for diabetes. david is 47 . he smoked when he was 14 years old but was exposed to second-hand smoke in prison. what do u suggest? cancer spread to his liver, rib, lower back and both lungs.